Noseclip, plastic, foam-padded noseclips help increase the accuracy of spirometry results by eliminating the escape of air through the nostrils during testing
KidWind Dowel, Recommended for College, High School, and Middle School Science, Diameter: 0.25 in, Length: 5 in, used for designing and testing wind turbine blades, and they fit into the KidWind Wind Turbine Hub, D100